Drier



W. D. PALEN AND H. BOGATY.

DRIER.

APPLICATION FILED OCT-3, I9I9 Patented June 29, 1920.

2 SHEETS-SHEET l.

UNITED STATES y PATENT 1 OFFICE.

WILLIAM D. -PALEN AND HERMANN BOGA'IY, OF PHILADELPHIA, PENNSYLVANIA,

ASSIGNORS TO THE PHILADELPHIA TEXTILE MACHINERY COMPANY, OF PHILA-DELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA,

' IDRIEB.

Specication of Letters Patent.

Patented June 29, 1920.

Application ieqff October 3, 1919. Serial No. 328,234.

To all whom it may concern:

and HERMANN BOGATY, citizens of the United States and Russia,respectively, '(the said BoGA'rY having declared his intentions of becoming a citizen of the United States,) and residents of Philadelphia,Pennsylvania, have invented certain Improvements in Driers, of which thefollowing is a specification.

Our invention relates to certain' improvements in driers of the type inwhich the material is carried through the chamber while air iscirculated therein.

One object of our invention is to provide means for preheating the freshair which enters the chamber.l

A further object of the invention is to cool the dried material as itleaves the drier.l

A still further object of the inventibn is to prevent the escape ofheated air from the discharge en of the drying machine into the faces ofthe operators working at this end of the machine.,

.In the accompanying drawings:

Figure 1 is a side view, partly in section, of a drier illustratingourimprovements;

Fig. 2 is a plan view;

Fig. 3 isan end view; and v Fig. 4; is a view showing one means ofholding the baiies in position.'

1 is the drying chamber which may be of any length` desired. Atone sideof the dry-` i lto the hot air passing through the opening ing chamberis the heating chamber 2, which is connected to the drying chamber. 3,''are circulating fans mounted on shafts 4, driven Y tively Warm. At thesame time, the cool in any suitable manner, for circulating air in thechambers. 5 is an endless conveyer off wire, or other suitable material,mounted on chains adapted to sprocket wheels 6 and 7.

inclosed in a casing 8 at the feed end of the machine and the materialis'carried through the-machine in the direction of the arrowl and isydischarged at the opposite end ofthe machine. Air is usually admittedat the discharge end of the machine and through the space occupied bythe endless 'conveyer, or through yseparate openings in the casmg. Thisintroduction of fresh air into the heating. chamber is'apt to chill theair in`circu1a'- tion unnecessarily. Furthermore, no means l is providedfor cooling the material beforev Be it known that we, WILLIAM D. PALENit leaves the machine.

By our invention, we provide a cooling compartment 9 at the dischargeend of the machine and connect this compartment by a pipe 13 with .thedrying chamber so that cold air will be drawn through lthe materialcarried bythe conveyer, which will cool the mapreheated before enteringthe main drying chamber. j ,n

In the present instance, the compartment 9 is formed by two walls 10 and10a, and in the inner wall'lOa is Yan opening closed by a hinged baiie12 andy in the wall 10 is an opening closed by.` a hinged battle 11. Thebaffle 12 is adjusted so as to clear the material `and at the same timethe air will be f terial being dried",while the baiie 11 canfbe through.the compartment 9 and. pipe 13, which communicates at 14 with thedrying chamber some distance in advance of the com artment 9. d

T e air, in traveling this distance, added with the material, preheatsthefresh air .so that it enters the heating chamber comparaaipassingthrough the material, while the material is passing through thecompartment 9, is radually cooled. The vpassa e of air into t e dryingchamber is due to t 1e suction created by the circulating fan within thedrier.

' While the invention .is shown as applied to a special type of drier,it will be understood that it can be used with any type of drier inwhich the material is traversed through the drying chamber.

We claim:

T he combination in a drier, of a drying chamber; fans'fo'r circulatinghot air in the chamber; an endless belt conveyer arranged longitudinallyin .respect to the drier and arranged to carry material through thedry-r ing chamber; a Compartment at the delivery end of the apparatusthrough which passes the eonveyer With the material; means forpreventing air passing from the compartment directly to the heatingehamber;' and a pipe Communicating With the upper portion of thecompartment and with one side of the heating chamber some distance backof the compartment so that the fresh air 10 drawn through the materialon the eonveyer will be preheated, While the material being dischargedWill be partially cooled..

. VVILLALM D. PALEN,

HERMANN BOGATY,

